Question about mkfs.jffs2 "-s" option

[Ricard Wanderlof]

On Wed, 2 May 2012, Grant Edwards wrote:

> The NAND flash I'm using has to be written in 4K blocks -- isn't that
> the "page size"?

The smallest writable unit in a NAND flash is called a 'page', but AFAIK 
this is not what the -s option in mkfs.jffs2 is for. Instead, it is 
related for the kernel memory managament page size, which is 4k for most 
architectures. I think the jffs2 driver determines the smallest writable 
unit runtime; it is not a parameter during the file system creation. 
However the erase block size must be specified to mkfs.jffs2 as it affects 
the structure of the file system image.

/Ricard
-- 
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
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